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Battery energy storage system Imperial Oil

Battery Energy Storage System for Canada’s largest petroleum refinery: the Imperial Oil case

Enel X’s deployment of a behind-the-meter battery storage system (BESS) for Imperial Oil’s refinery estimated to generate $4 million in annual energy savings

Thanks to the agreement between Imperial Oil Ltd. and Enel X, a 20 MW/40 MWh behind-the-meter Battery Energy Storage System (BESS) will be developed for the company’s refinery in Sarnia, Ontario.

According to publicly available data, the system is expected to be the largest behind-the-meter BESS in North America and it is estimated to deliver $4 million in energy savings for Imperial Oil.

The client

Imperial Oil Ltd. is Canada’s largest petroleum refinery, a major crude oil producer, a key petrochemical producer and marketer of fuels, lubricants, asphalts and specialty products across Canada and export markets. After more than a century, Imperial continues to be an industry leader in applying technology and innovation to responsibly develop Canada’s energy resources.

The agreement’s benefits

Enel X’s challenge

Imperial Oil’s business plan places sustainability as a priority, with the aim to achieve net-zero emissions in operated oil sands by 2050. To achieve this, the company is committed to emission-reduction, optimizing all available innovative solutions across all sectors, including the use of renewables.
Enel X will build and operate a 20 MW/40 MWh behind-the-meter (BTM) BESS for its Sarnia, Ontario petrochemical operation. It will provide consultancy expertise and support offering accurate peak prediction services and enroll the battery storage system in IESO’s demand response program.
The BESS system is designed to charge overnight while the province of Sarnia is operating on lower-carbon electricity powered by renewables and will discharge electricity during peak energy hours, reducing Imperial Oil’s overall draw from the grid. This in turn will allow for considerable savings for the company in terms of operational costs of the plant in Sarnia in addition to the environmental and community benefits it will generate.
Enel X’s challenge